Motor-car.



1%. 855,572. PATENTED JUNE 4,1907.

W. D. HAWK. MOTOR GAR.

APPLICATION FILED AUG.'23, 1906.

3 SHEETS-SHEET 1.

, INVENTOR WITNESSES: 4 3 RS. 9 naw-M M ATTORNEY PATENTED JUNE 4, 1907.

W. D. HAWK. MOTOR GAR.

. APPLIOATION FILED AUG. 23, 1006.

WITNESSES:

- preferably done by means WALTER D. HAWK, OF CHICAGO, ILLINOIS.

MOTOR-CAR.

Specification of Letters Patent.

Patented June 4, 1907.-

Application filed August, 23,1906. Serial No. 331,769.

To all whom it may concern.-

Be it known that I, WALTER D. HAWK, a

- citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Motor-Cars, of which the following is a specification.

This invention concerns motor cars and its object is to provide aself-propelled car of large size and capable of comparatively highspeed, which is economical in operation and which is adaptedparticularly for use on short lines of railway which are tributary tomain lines.

In accordance with my invention, I employ a car-body of considerablelength ivotally mounted on bogie-trucks. T ese trucks are preferably ofthe six-wheel type and one or both of them are provided with a motor andtransmission mechanism for connecting the motor in driving relation tothe wheels. This mechanism is of the type operating by the frictionalengagement of contacting parts, and in order to provide a large numberof frictional surfaces through which the power of the'engine istransmitted so that slipping is minimized, I employ two separatetransmission mechanisms for each engine to connect the latter in drivingrelation to the axles of the truck. The ty e of mechanism I prefer toemploy is that slibwn in my application, Serial Number 285,075, filedOctober 30, 1905, having a disk driven by the engine and rollers onopposite sides of the disk-axis adapted to be moved radially of and intoand out of engagement with the disk. Since the corresponding rollers andtheir shafts, in such a transmission mechanism, rotate in oppositedirections, I so connect them to the axle of the truck that both willdrive it in the same direction, this being of a chain drive for oneshaft and gearing for the other arranged to permit movement of theengine and transmission mechanism relatively to the axle on theirsupporting springs which relieve them from the constant vibration towhich they would otherwise be subjected. The application of the power ofthe engine to the axle is controllable from the car-body at either endthereof irrespective of the posi tion of the truck relatively theretoand if both trucks are rovided with engines and transmission mec ianismsthese may both be so controlled.

I have illustrated the preferred embodiof the springs.

ment of my invention in. the accompanying drawings, in which Figure 1 isa plan view of the two. trucks, showing the car-body in outline, Fig. 2is a side elevation of the car, broken away in art, Fig. 3 is a detailview hereinafter referred to, Fig. 4 isan enlarged plan view of one ofthe trucks, Fig. 5 is a section on line 55 of Fig. 4, Figs. 6 and 7 aredetail views hereinafter referred to, Fig. 8 is an enlarged side view ofthe truck, broken away in part,

Fig. 9 is a view showing the mechanism for operating the roller shafts,and Fig. 10 is a view showing the manner of supporting the engine. v

Referring to these drawings, 1 indicates the car-body pivotally mountedupon two bogie-trucks. These trucks are preferably of the six-wheel typeand are so arranged that the forward pair of wheels of each truckextends out beyond the end of the car. In the drawings I have shown bothtrucks provided with a motor and suitable transmission mechanism forconnecting it to the axles but I wish it understood that, if desired,only one of the two trucks may have propelling mechanism.

I The construction of the trucks will be best understood from Figs. 4and 8 and as they are similar in all respects a description of one willsuflice. The Wheels 2 are mounted on axles 3 extending through journalboxes 4.

Rigidly connecting the journal boxes on each side of'the truck is a sidemember 5 having depressed'portions between. the pairs of axles and onthese depressed portions are formed offsets 6 to receive and support thelower ends of heavy coiled springs 7. The sideframes 8 of the truck haverectangular openings therein in which the journal-boxes 4 are adapted toslide vertically to permit of vertical movement of the frames and allthe partscarried thereby relatively to the members 5 and axles 4, suchmovement being permitted by .the supporting springs 7 which thereforeserve to relieve the car-body and other parts from vibration; thesprings 7 support the side-frames 8 upon their upper ends, means beingprovided to prevent ateral movement Rigidly secured, upon theside-frames 8 is a heavy bearing plate Qhaving a socket at its center toreceive the kingpin which is secured upon the bottom of the car-body,and. about Which the truck turns relatively to the car-body. Between theJIIO truck frame and the car-body is an auxiliary -mission mechanism.are

- side-frames 8 so that the engines and the transmission mechanism-havethe benefit of both springs 11 and springs 7. The springs 11 are ocatedat the four corners of the auxiliary frame and preferably fouradditional springs 11 are provided intermediate the ends of theauxiliaryframe. Each of these springs has a bolt 12 extendingtherethrough and nuts upon the bolt to limit the amount of movement ofthe auxiliary frame.

The engine 13 is preferably of the internal combustion ,type andarranged for quickly reversing its direction of rotation; it is rigidlysecured upon the side members of the auxiliary frame 1.0 between theaxle of the truck which lies forward of the end of the car and themiddle one of the three axles. The cylinders of the engine may bearranged vertically and extend up forward of the dash.- board of the cara short distance. The shaft of the engine extends longitudinally of thetruck-and is connected to the transmission mechanism which serves totransmit the ower ofthe engine to the axles-of the truck. referably, Iemploy frictional transmission mechanism by which the power is trans-'30.

mitted by friction wheels adapted to be .moved into and out of contactwith each other.

In order that a large amount of power may be transmitted to the axlesand slipping of the friction surfaces minimized, I provide a largenumber of contacting friction surfaces so that the tbtal power of theengine is divided among all of these; To accomplish this, I employ twoseparate transmission mechanisms for a single engine and each of these,mechanisms is of the type having a disk driven by the engine, and twopairs of friction rollers adapted to be moved into and out of engagementtherewith, the two pairs being disk and the rollers of each -positesides of the disk itse f. of the engine, as above stated, extendslongitudinally of the truck andit has mounted located on opposite sidesof the axis ofthe air being on op- The shaft 14 thereon two frictiondisks 15 and-16, one located between the middle and rear axles 3 of thetruck and the other located in the rear of therear axle 3. Fourfriction-rollers 17, 18,

, 19 and 20 are splined on transverse shafts-21,.

22,, 23 and 24,- respectively, which are adapted to be moved laterallyto carry the peripheries of v the rollers into and out of engagementwith the opposite faces of the disk 15 and four similar rollers aresimilarly mounted and arranged to engage the disk 16.. The non-adj acentends of the-shafts 21, 22, 23 and 24 are" (carried by pivoted bearingsmounted on depending portions of the auxiliaryfr-ame 10. The:constructionof these hearings -is illustrated in Fig. 6 from which itbe seen that 1 the bearing 25 is secured upon a plate 26 having acylindrical projection 27 extending through an opening in the frame 10so that the bearing can turn about the projection 27 as a' pivot. Theadjacent ends of shafts 21 and 23 are carried by bearings 28 and theadjacent. ends of shafts 22 and 24 by bearings 29 These bearings areadapted to slide horizontally toward and away from each other uponbars30 extending between cross-members on the auxiliary frame. The mechanismfor moving the bearings 28 and 29 toward I and away from each other tocarry the friction-rollers into and out of engagement with the frictiondiskwill be best understood by reference to Fig. 9. Extendinglongitudinally of the truck and directly over the center line thereof isa rod'31 and a link 32, pivotally mounted upon bar 30, isconnected atone end to rod 31 and at the other to a rod 33 lying below and parallelto rod 31. Two levers 34 and 35 are pivoted upon the bars 30 and attheir upper ends are connected to rod 31; the lower ends of the levers34 and 35 are bifurcated and the ends of the bifurcated arms areconnected by links 36 with the two bearings 28 of each of the twotransmission mechanisms. Two levers 37 and 38 are pivoted upon the bars3O- and connected at their lower ends with rod 33; the upper endsof-these levers are similarly bifurcated and linked to the two bearings29 of each of the two transmission mechanisms. It will be readilyunderstood that this construction is such that when rod- 31 is movedaxially in one direction, rod 33 is similarly moved in the op ositedirection and all of the frictionrol ers are moved toward or away fromtheir respective friction disks, a forward movement of rod 31 in thedirection of the arrow in Fig. 9 moving the rollers into engagement withthe disks and a backward movement carrying them out of engagement.mechanism for operating rod 31 will be hereinafter described.

Mounted directly over each and 16 in bearings carried by the auxiliaryframe are shafts 39 and 40 each having reverse threads of large pitchcut therein. On each of the threaded portions of each of these rods is ayoke 41, the arms of which are bifurcated at their ends and extend downinto eripheral grooves in hubs 42 formed on-theict1o'n-rollers lyingvdirectly below the yoke. The portions of the yoke extending into each ofthese grooves are spread sufliciently to per ofthe disks 15 Them mit ofthe necessary amount of lateral movemerit of the shafts carrying therollers. At the center of each of the rods 39 and 40 is a worm'wheel 43meshing with a'worm 44 on a shaft 45, extending lengthwise of the truckand mounted in bearings thereon. Byrotating the shaft 45, the shafts 39and 40 are simultaneously each of these shafts are moved toward androtated and the yokes on away from each other, thereby carrying thepairs of friction rollers toward and away from the axes of the disks 15and 16. The mechanism for rotating shaft 45 will be hereinafterexplained.

On shafts 21 and 22 are a pair of intermeshing gears 46 and on shafts 23and 24 are a pair of intermeshing gears 47 so that the power of shafts22 and 24 is transmitted to shafts 21 and 23 respectively. Since therollers on the shafts 21 and 23 are on opposite sides of the axis ofdisk 15 these shafts will be driven in opposite directions when the tworollers are in engagement with the disk and therefore shafts 21 and 23cannot be similarly connected to one of the axles of the truck to driveit in the same direction; and the means for transmitting the power fromthese shafts to the axle must be such as will permit of verticalmovement of the transmission mechanism relatively to the axles of thetruck, since that mechanism is carried by the springsup ported auxiliaryframe. I therefore connect the shaft 21 of the transmission mechanismnearer the engine to the middle one of the axles of the truck by meansof a chain 48 running on sprocket wheels mounted on shaft 21 and on theaxle as shown in Fig. 3. The shaft 23 is connected to the axle by meansof intermeshing gearsarranged to be held constantly in mesh throughoutthe vertical movements of the transmission mechanism relatively to theaxles of the truck.

Referring to Fig. 7, it will be seen that a link 49 is pivotally mountedat one end upon axle 23 and at the other end thereof is formed a bearingfor the shaft of a gear 50 which meshes with agear 51 carried by thelink 49 and meshing with the gear 47 on the shaft 23. The shaft of gear50 also extends througha bearing in the end of a link 52 pivotallymounted at its other end upon the axle 3. Keyed on the axle is a gear 53meshing with the gear 50. It will be seen that by this construction eventhough the shafts 21 and 23 rotate in opposite directions they will bothtend to drive the axle of the truck in the same direction since the oneis connected to the shaft by the chain 45 and the other by the train ofgears; and throughout the vertical movements of the transmission, thisconnection is always maintained since the links 49 and 52 always holdthe gear-sin the proper relation. The parts of the transmissionmechanism rearward of the rear shaft 3 are all similar in constructionand arrangement to those above described in connection with thetransmission located between the second and third axles and the shafts21 and 23 thereof are connected to the rear axle 3 in the same manner asthat above described. The power of the engine is therefore transmittedfromthe engine shaft through the disks 15 and 16 thereon to eightfriction rollers making contact with these disks and each of these pairsof contact surfaces transmit only one-eighth of the total ,power of theone motor truck. By means of the gearing all of the power is transmittedfrom the eight shafts of these rollers to the axles of the truck. On theextreme ends of each of the three axles are cranks 54, and those on eachside of the truck are connected by a connecting rod 55. Also, theprovision of an auxiliary frame upon the truck supported upon springsand carrying the engine and all of the transmission mechanism, relievesthe delicate parts of the engine and transmission mechanism from thecontinual arring to which they would otherwise be subjected while thecar is running.

I will now describe the mechanism for operating the parts of thetransmission mechanism from the car-body. As above stated each of thetwo trucks may be provided with controlling mechanism, and in this caseI so construct the controlling mechanism that the transmission of powerrom both engines to the axles of both trucks may be controlled from thecar-body at either end thereof. The shaft 45 for effecting the radialmovement of the friction rollers with respect to the friction disksextends through an opening directly below the king-pin of the truck andis provided with universal joints 5 6 and one or more extension joints57. The forx'iard end of shaft 45 extends through a bearing 58 securedto the bottom of the car-body and on its extreme end carries abevel-gear 59. This bevel-gear meshes with a similar gear 60 upon thelower end of a shaft 61 mounted in suitable bearings 62 and extending upto a position convenient for the operator who stands upon the platformof the car, the shaft being provided with a suitable operating handle.At its rear end, the shaft 45 is connected by a universal joint 63 andan extension joint 64 to a shaft 65. This, at its other end, issimilarly connected to the end of the shaft 45 on the other truck of thecar so that by operating the controlling shaft 61 at either end of thecar, the shafts 45 on both of the trucks are simultaneously rotated toeflect a radial movement of all of the friction-rollers on both of thetrucks. The forward end or, the rod 31 is connectedto one end of a yoke66, the sides of which lie on opposite sides of the narrow portion ofbearing plate 9 of the truck. The forward end of yoke 66 is curved onthe arc of a circle about the pivotal axis of the truck as -a center, asshown at 67, Fig. 4. A member 6S has arms extending above and below theportion 67 of yoke 66v and in' the ends of these arms is pivoted aroller 69 adapted to move back and forth across the portion 67. A cable70 is connected to the member 68 and is wound three or four times arounda drum 71 secured on a shaft 72 which passesfu'p through the platform ofthe carbody and is provided at its upper end with operating handle. Atthe middle of the por tion of the cable which is wound around the drum,the cable is secured to the drum, as indicated at 73, Fig. 4. The otherend of cable 70 extends lengthwise of the .car to the other truck, whereit is similarly wound around and secured to a drum 74 on a rotatableshaft which passes up through the rear platform of the car. The extremeend of the cable is secured to a member similar to the member 68 on ayoke to which the operating rod on the rear truck is connected. The twodrums 71 and 74 are located as near the pivotal axes of the two trucksas the arrangement of the parts of the trucks will permit. It will thusbe seen that when either of the yokes 66 is reciprocated by rotating thedrum 71 or 74 adjacent thereto, the yoke 66 on the other.

truck is similarly moved but always in the opposite direction, by meansof the cable 70 so that the operator when standing at either end of thecar-body can simultaneously move all of the friction-rollers upon eachof the two trucks into or out of engagement with their respectivefriction disks.

The operation of the car as thus construct ed will be understood fromthe foregoing delarge amount of power, each roller receives andtransmits only a comparatively small amount and there is thereforelittle slipping. All of the power of these rollers is delivered to theaxles when the car is running in either direction and the operator whilestanding at either end of the car has full control of the position ofall of the rollers for starting and stopping the car and varying itsspeed.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. In a car, the combination of a frame,

axles journaled therein and wheels on the axles, an engine mounted onthe frame, a friction disk driven by the engine, rollers adapted to makecontact simultaneously with said disk on. opposite sides of thediskaxis, shafts for said rollers, a chain connecting one of said shaftswith an axle of the truck, and gears connecting the other of said shaftsto said axle, substantially as described.

2. In a car, the combination of a frame, axles journaled therein andwheels on the axles, an engine, a transmission mechanism,

springs supporting the engine and said mechanism upon the frame, saidmechanism including a friction diskdriven by the engine,

rollers adapted to make contact simultaneously with said disk onopposite sides of the diskaxis.and shafts for said rollers, a chain Iconnecting one of said shafts to an axle of the truck, gears connectingthe other of said shafts to an axle of the truck, and means for holdingsaid gears in'mesh throughout the movements of the spring-supportedtransmission mechanism relatively to the axles, substantially asdescribed.

3. In a car, the combination of a pivoted truck having a frame, axlesand wheels, an auxiliary frame, springs supporting the same upon thetruck frame, an engine mounted on said auxiliary frame, a disk driventhereby, two pairs of friction-rollers mounted onopposite sides of thedisk-axis, the rollers of each pair being on opposite sides of the disk,

a shaft for' each of said rollers mounted on said auxiliary frame, meansfor moving said shafts laterally to carry the rollers thereon into andout of engagement-with said disk, gearing between the shafts of therollers of each pair, a chain connecting one of the shafts of saidrollers with an axle of the truck, gears connecting the shaft of aroller of the other pair to said axle, and means for holding said gearsin mesh throughout the movements of the auxiliary frame relatively tothe axles, substantially as described.

4. In a-car, the combination of a car-body, a bogie-truck on which thecar-body is pivot- .ally mounted, an engine on the truck, a pinrality oftransmission mechanisms on the truck, 'each consisting of a disk drivenby the engine, pairs of rollers adapted to make contact with the disk onopposite sides of the diskaxis, the rollers of each pair being adaptedto engage the disk on opposite sides thereof, and means for moving therollers radially of and into and out of engagement with said disk, andmeans for transmitting power from the shafts of said rollers to theaxles of the truck,'substanti ally as described.

5. Ina car, the combination of a car-body; a bogie-truck on which thecar-body is pivotally mounted, an auxiliary frame spring-supported onthe truck, an engine and a plurality of transmission mechanisms mountedonsaid auxiliary frame, each of said mechanisms consisting of a diskdriven by the engine, a

plurality of rollers, and means formoving said rollers radially of andinto and out of contact with said disk, and means for transmitting powerfrom the shafts of said rollers to the axles of the truck throughout themovements of the auxiliary frame relatively to the axles, substantiallyas described.

6. In a car, the combination of a car-body, a six-wheel bo ie-truck onwhich the carbody is pivotal y mounted,-an engine upon the truck betweentwo adjacent axles thereof, two transmission mechanisms .mounted on thetruck one between two ad 'acent axles thereof and the Other'ad acent toone of said axles, each of said mechanisms consisting of a disk drivenby the engine, a plurality of rollers, and means for moving said rollersradially of and into and out of engagement wit-l1 said disk, and meansfor transmitting power fromthe shafts of said rollers to the axles ofthe, truck, substantially as described.

7. In a car, the combination of a car-body, 'two bogie-trucks on whichthe car-body is pivotally mounted, an engine on one of said trucks, atransmission mechanism on said truck comprising a disk driven by theengine and rollers adapted to make contact with said disk on oppositesides of the disk axis, gearing connecting the shafts of said rollers tothe axles of the truck, and means operated from the car-body at eitherend thereof for moving said rollers radially with respect to the disk,substantially as described.

8. In a car, the combination of a car-body, two bogie-trucks on whichthe car-body is pivotally mounted, an engine and a transmissionmechanism mounted on each of said trucks, said mechanisms eachcomprising a disk driven by the engine and rollers adapted to makecontact with the disk on opposite sides of the disk-axis, gearingconnecting the shafts of said rollers to the axles of the trucks, andmeans operated from the carbody at either end thereof for simultaneouslymoving the rollers of both said transmission mechanisms radially oftheir respective disks, substantially as described.

9. In a car, the combination of a car-body, two bogie-trucks on whichthe car-body is pivotally mounted, an engine on oneof said trucks, atransmission mechanism on said truck comprising a disk driven by theengme and rollers adapted to make contact with said disk, gearingconnecting the shafts of said rollers with the axles of the truck, andmeans operated from the car-body at either end thereof for moving saidrollers into and two bogie-trucks on which said car-body is pivot-allymounted, an engine and a trans mission mechanism on each of said trucks,said mechanisms each comprising a disk driven by the engine and rollersadapted to make contact with said disk, gearing connecting the shafts ofsaid rollers to the axles of the trucks, and means operated from thecar-body at either end thereof for simultaneously moving the rollers ofboth of said transmission mechanisms into and out of engagement withtheir respective disks, substantially as described.

11. In a car, the combination of a car-body, two-bogie-truoks on whichthe car-body is pivotally mounted, an engine and a transmissionmechanism on each of said trucks, said mechanisms each comprising a diskdriven by the engine, rollers adapted to make contact with said disk andan operating means connected to said rollers for moving them into andout of engagement with said disk, gearing between the rollers of saidmechanisms and the axles of the trucks and means operated from thecar-body at either end thereof and connected to said operating means onboth of the trucks for moving them simultaneously in oppositedirections, substantially as described.

This specification signed and witnessed this 4th day ofAugust, 1906.WALTER D. HAWK.

Witnesses:

GEORGE F. SWAIN,- GEORGE M. HOKE.

